Jack London (1876-1916), born in San Francisco and raised in poverty in Oakland, rose to become one of America's most famous writers and social critics. Drawing on his experiences as a laborer, sailor, and Klondike gold seeker, London wrote adventure stories like The Call of the Wild and White Fang, and explored social injustice in works such as The Iron Heel. A voracious reader shaped by Darwin, Marx, and Nietzsche, London's work blended naturalist philosophy with a passion for social reform. He published over fifty books and hundreds of stories, maintaining lifelong socialist convictions while achieving international fame. His legacy endures in his vivid depictions of survival, struggle, and humanity's place in the world.